Trolley-restoring device.



vNo. 740,105. PATENTBD SEPT. 29, 1903. G. W. BOWLING.

TQLLBY RBSTORING DEVICE. APPLICATION FILED JAX. 31, 1903.

I0 MODEL.

llluniilll? `Patented. September 1903.

CHARLES w. iiw'ilmcgor'NEWARK, omo.

SPECIFICATION forming part of Letters Patent No. 740,105, datedSeptember 29, 1903. Application ned tammy 31,1903.: serai No. 141.358.(No model.)

To` all whom t 17m/y concern.'

Be it known that I, CHARLES W. DowLING, a citizen of the United States,residing at Newark, in the county of Licking and State of Ohio, haveinvented a certain new and useful Improvement in Trolley-RestoringDevices, of which the following is a specification.

This invention relates to trolley poles and V wheels, and has for itsobject to provide improved means for automatically restoring the wheelto the trolley-wire in the event of the former becoming accidentallydisplaced from the latter. It is furthermore designed to provideimproved duplicate inders or restoring devices, which are to-be mountedupon the head of the pole at opposite sides of the wheel, said devicesbeing normally out of engagement with the wire and at the same timecapable of engaging the wire and automatically shifting thetrolley-wheel back to the wire should it become displaced therefrom.

With these and other objects in View the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings,and particularlypointed out in the appended claims, it, being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claim without departing from the spirit or sacrificing anyof.

the advantages of the invention.

In the drawings, Figure l is a side elevation of a trolley deviceequipped with finders or guards embodying the features of the presentinvention. Fig. 2 is a front elevation of the device. Fig. 3 is across-sectional view with one of the devices in'its normal position andthe other in position to return the trolley-wheel to the Wire, and Fig.4 is a detail elevation of one of the guards to show the convergedgrooves thereof.

Like characters of reference designate corresponding parts in all of thefigures of the drawings.

To illustrate the application and operation of the present invention,there have been shown the upper portion of an ordinary trolley-polevl,the` upper end of which is provided with the usual bifurcated or forkedhead 2, within which a grooved trolley-wheel 3 is rotatably mounted. Asthese parts are -the opposite end thereof.

merely to illustrate the application of the invention, they may beconsiderably varied in form without interfering with the operation ofthe Vpresent device.

' In carrying out the invention each side member of the head 2 isprovided with a pendent ear or extension 3, which is provided With ascrew-threaded opening for the reception of the reduced screw-threadedeX- tremity of a smooth cylindrical headed pivotpin 4.- Upon thispivot-pin there is a rotatable hub consisting of an outer member 5 andan inner member G, between which members are rigidly held radial arms,preferablythree in number and designated in therdrawings by thereference characters 7, '8, and 9, as best indicated in Fig. l of thedrawings. It will be seen that these arms increase in lengthregularlyfrom the shortest arm 7 which in its normal position rises fromthe hub and terminates short of the bottom of the uppermost portion ofthe groove in the trolleywheel. For the purpose of lubricating thebearing of the hub theouter and longer member thereof is provided with aradial perforation 10, throughwhich oil may be introduced to thepivot-pin 4.

Carried by the outer extremities of the radial arms is a peripheral rim11, that portion of which is at or adjacent to the short arm 7 is alsosubstantially horizontal and is provided in its outer face with aplurality of longitudinal grooves l2, which converge from what isnormally the upper end of the rim to It will here be noted that saidopposite end portion of the rim Vhas its outer face smooth, and from thefgrooved end of the rim to the smooth end thereof said rim is twisted ortorsionally deflected, so as to render the outer face ofthe smoothportion of the rim beveled or inclined inwardly toward thetrolley-wheel.

From the foregoing description itA will be understood that each of thefinders or restoring devices is in the nature of a light skeleton cam oreccentric the upper portion of which is normally at or below theuppermost portion of the groove in the trolley-wheel, and as it is alsoentirely at the outer side of said wheel it does not interfere in anymanner whatsoever with the proper traveling of the Wheel upon theordinary trolley-wire 13. However, should the trolley-wheel becomedisplaced from the Wire the latter would be engaged by the upper portionof one or the other of the finders or restoring devices and also bereceived in one of the grooves 13 thereof. As the trolleypole movesforwardly in the direction of the arrow on Fig. l of the drawings thefrictional contact between the rim ll and the trolley-Wire is suihoientto rotate the eccentric upon its pivot 4, wherebythe wire will begradually elevated until it is slightly above the uppermost portion ofthe periphery of the trolley-wheel, when it will be shifted laterallyinto the groove of the wheel by means of the torsionally-deiiectedsmooth terminal portion of the eccentric rim. `.After the Wire has leftthe rim the eccentric has sufficient momentum to make a completerotation and resume its original position. It will thus be understoodthat the operation of each of the nders or guards is entirely automatic,and when its function has been completed it automatically resumes itsoriginal position in readiness for operation whenever required.

An important feature of the device of the present invention resides inthe fact that it may be applied to any ordinary trolley device withoutaltering or changing the saine in any manner whatsoever, as thepivot-pin 4 n I may be fitted to the head 2 slightly in front of andbelow the journal of the trolley-wheel, thereby dispensing with the ear3. As this slight change is obvious, it has not been deemed necessary toillustrate the same in the drawings.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, is-

The combination with a trolley-arm and a trolley-wheel carried thereby,of a restoring device consisting of a hub, pivoted upon the trolley-poleeccentrioally with respect to the axis of the trolley-wheel, radial armscarried by the hub and disposed in a vertical plane substantiallyparallel to that of the trolleywheel, and a rim carried by the radialarms and disposed eccentric with respect to the hub, the normally upperportion of the rim being substantially horizontal and provided With aplurality of longitudinal grooves which converge toward the opposite endportion of the rim, said opposite end portion being torsionallydeflected and inclined laterally inward toward the trolley-wheel.

cHARLEs w. DoWLING.

In presence of A. L. PHELPs, NV. L. MoRRoW.

